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Stories about: Proceratosaurus

Oldest T. Rex Ancestor Lived 170 Million Years Ago Paleontologists have recently identified a new species of dinosaur that they believe is the oldest known ancestor of the mighty Tyrannosaurus Rex, one of the most fearsome predators to have ever lived. The 170-million-years-old beast was only 10 feet (about 3 meters) in length, and featured a tiny horn on its snout. ... 4 November 2009 03:59 GMT